Milkshake container lid



FIG. 1 is a top perspective view of the milkshake container lid of the present invention;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a side view thereof; and,

FIG. 5 is a bottom view thereof. 

The ornamental design for a “milkshake container lid,” as shown and described. 